git: ce2f34ade8b7 - main - arm: Disable the VFP during boot
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Date: Mon, 11 Dec 2023 14:16:38 UTC
The branch main has been updated by markj:
URL: https://cgit.FreeBSD.org/src/commit/?id=ce2f34ade8b787b068085fa8a8ddd295b06c2737
commit ce2f34ade8b787b068085fa8a8ddd295b06c2737
Author: Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2023-12-11 14:08:49 +0000
Commit: Mark Johnston <markj@FreeBSD.org>
CommitDate: 2023-12-11 14:08:49 +0000
arm: Disable the VFP during boot
The VFP code expects the kernel to boot with VFP disabled, but some
boards will boot with it enabled. Make sure that vfp_init() disables
the VFP on each CPU during boot.
PR: 273752
Reviewed by: andrew
Diagnosed by: Thomas Skibo <thomas-bsd@skibo.net>
MFC after: 1 week
---
sys/arm/arm/vfp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sys/arm/arm/vfp.c b/sys/arm/arm/vfp.c
index bbcb468391b6..6c398a7a3eaa 100644
--- a/sys/arm/arm/vfp.c
+++ b/sys/arm/arm/vfp.c
@@ -181,6 +181,8 @@ vfp_init(void)
elf_hwcap |= HWCAP_VFPv4;
}
+ vfp_disable();
+
/* initialize the coprocess 10 and 11 calls
* These are called to restore the registers and enable
* the VFP hardware.